No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Brain / drug effects*
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Dose-Response Relationship, Drug
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Drug Tolerance
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Electrodes, Implanted
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Female
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Morphine / administration & dosage
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Morphine / pharmacology*
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Rats
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Self Stimulation / drug effects*
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Stereotaxic Techniques
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Stimulation, Chemical
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Time Factors